Heat-conserving receptacle.



J. H. WILSON Sz T. S. FRIEND. HEAT GONSERVING RBUBPTAGLB. APPLIOATIN FILED man. 4, 1908.

Patented July 20, 1909.

/ www, Jil/Oria@ i JAMES H. WILSON AND THOMAS S. FRIEND, OFl CHICAGO, ILLIVNOIS.

HEAT-CONSERVING BECEPTACLE.

Specication of Letters Patent.

ndose-114,.

Patented July `20, 1909.

Application tiled February 4, 190B. Serial No. 414,284.

To all whom it Vmay concern:

Be itknown that We, JAMES H. WILSON and THoMAs S. Fanano, respectively av citizen of the United States andI a subject of the King of Great Britain, residing at Chicago,

`in the. county o if Coorand State of Illinois, have Vinvented certain new and useful Ime h ovements in Heat-Conserving Receptacles, of which the following is a specification.

f This invention relates to improvements in.

hea tLconservin/greceptacles, .and refers more Y speclfica'lly to, `inaprovernents E1n` receptacles of that type which are used for' cooking foods and the like by flstheating. the material to be cooked, then placingit in the receptacle and'co'neerving the heat for a su'lcient period to accomplish the cookingA by this initial heat.

i .Among the salient objects of4 theA present invention are to provide a receptaclein 'which-'a double insulation is prbvidejdas to l its side walls, and this is accomplished withas, members isn an extension; to provide in,` a

out necessitating the handling of numerous i separate parts by means of a 1peculiarl com structed cover o which one o the insu Vating rece tacle of ,this character means whereby the atter .becomes self-'sealing' and incluses' the commodity 'in a Vhermetically 'sealed chamber; to provide a construction co posed of comparatively simple'and cheap y formed parte; to provide a receptacle, in which al parts of its interior are readily accessible for cleansing and in which there are no recesses or deep angles which might be come o;uled;^a`ndV in general to provide a simple and improved receptacle of the charactor referred to.

pended) claims.

ceptacle, preferably radially inturned extension or {iange 2, the

vinner Vperimeter of which is downturned, as

inidicated at 3, and provided at 1ts 'lower end T o the above ends theiinvention consists in the matters hereinafter described,y and more articularlypointed 'out in the ap` In the single figure of the drawing,jthe receptacle proper` is shown in axial section, a portlo of the bail being broken away, and an i er vessel for containing food or the. like is shown in side elevation.

In the referred embodiment of our invention il pstrated in the drawing, 1 designatos as 'a whole an.`outr'bucketlike" rehaving cylindric side walls, provided at its upper end withV a w an insetsheet met-al bottom 4 which which is spaced the space inside di the 's ace below the inseti bottom 4 and' inside of.

t 1e. extension 1 of the side body is desirably filled with a block of Wood or noninsulating material 7. The outer receptacle 1s `conveniently provided with ears 8, to which is attached a bail 9 in the usual manner.

i0 designates as a whole the cover, the )nain body of which is made of suitable diameter to fit snugly inside of the flange member 2 and is made hollow to rovide an insulating space 11 which is desi ably filled with some suitable insulating material, preferably mineral wool, in onder that it may not only serve as an 'insulator but add some Weight to the down. The u per wall member 12 of the cover is extended radially outwardly so as to overlie the flange member 2 and returned upon itself as indlcated at 13 to receive the ou-tturned flanged edge 15 of the' cylindric side body 14 ofthe cover. Thiscylindric side bod is continued downwardly substantially to t ebottom' of the vessel and' is there joined with a second inner annularr member 16 away from the member 14 and-is at its up er edge joined to the bottom wall Vmember 1 of the coverythe two mein-I bers 14 and 16 together forming an annular hollow extension joined to the cover. member 17 of the cover is conveniently of cap form, i. e. provided with an outturned peripheral lian-ge 18, and .is seated and secured againstaJ bead 19 1n the member 14. The several joints ofthe hollow extension 4are soldered so that the annular spar within the' latter is -hermetica'lly sealed `and' the lower edge of said extension is made to t accurately against the bottom of the receptacle so that the accumulation of a very small amount of water of condensation in the bottom of the vessel will effectually seal i hollow extension against communication" with alle space 20 intervening between the side Wall of the vessel and the hollowextension. Thc cover 1s conveniently provided with a r1ng-p'ull2l whereby' it may taule. l

In operation any suitable dish or other food receptacle, as for example that indicated at 22, with its contents, which have cover to held the latter firmly` vThe l be lifted out'of the receploA in the receptacle, and as soon as the latter s closed the steam within the chamber will be condensed upon the inner walls of the latter and will flow down upon the inner surface of the hollow extension to the lowerv blunt edge of the-latter. At thisf' oint the water of condensation will, at first y reason of its capillary attraction, immediatelylill the angle between the lqweredge ofthe hollow extension and the bottom wall of the receptacle.. As more waterl of condensation accumulates, ,the bottom of the vessel will be' covered and the seal thus electively maintained. It'is to be noted that the flangc-like radial extension of the cover' is constructed. to lit with approximate exactness upon the inturned flange member 2 of the receptacle, and so also the cylindric side member 14 of the cover is arran ed to fit. with considerable exactness insi e of the coverv opening of the receptacle. It follows that as to the outer insulatin s ace 20 it is so nearly hermetically scale t iat no appreciable circulation of air therethrough' will occur', while the steam and vapors are entirely prevented from escaping fromthe interior of the receptacle into this s ace. The hollow extension being hermetical sealed in itself, forms a very eifective insu ation. The hollow packed main body of 'the cover serves to electurally retain the heat while the insulating bottom Y is also effective to the san/iev end.

While -we have herein shown the preferred embodiment of our invention, nevertheless 'it will be understood that the details'of 'conf struction may be modiedwithout depart- .in from the invention.

Ve claim as our invention:

1. In combination, an outer receptacle, a heat insulating cover fitting and closing the upper end of said receptacle, an inner hollow annular member attached to and removable with said cover, said annular member having concentric spaced apartA side walls,the .outer member of .which is in turn spaced away from the outer sidewalls of the receptacle.

Q. In combination, an outer receptacle, a

heatdnsulating cover fitting and closing the.

u'pper end of said rece tacle, an inner hollow annular member attac ed to and fo; r rxing a downturned extension of said cover, said annular member being spaced away from the side walls of e outer receptacle and extend ing from the cover down into close proxlmlty to orcontact with, the bottom of the receptacie.

` 3. In combination, an outer receptacle provided at its u per. end with a radially inwardly exten ing tiange-like extension, a heat-insulating cover having spaced apart inner and outer lwalls fittingr within the upper end. of said receptacle and resting against said flange-like extension, a hollow annular extension connected with the periphery of said cover and extending thence downwardly to yand res-tin against the bottom of the receptacle, sai( extension being spaced away from the side walls of the receptacle and` the interior thereof being her` meticaily scaled.

4. In combination, an outer receptacle -provided atits u )per end with a radially inwardly exten ing flangedike extension, a heat-insulati-ngcover havin spaced apart inner and outer walls itt ng within theV 4heat-insulating cover fitting arid c osi'ngrthe upper end of said receptacle, an innerl hollow annular member attached to a`nd forming a downturned extension of said cover, said annular member extendingV from the cover down into close proximity to, or contact with, the bottom of the receptacle.

' JAMES H. WiLso.

THOMAS SFRIEND.y

lVitnesses:

ALBERT H. Gnavas, EMILIE Rosa. 

